Patent US1256840A successfully refreshed from Google Patents.
Patent US3819845A successfully refreshed from Google Patents.
US3819845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Termination for metal enclosed, compressed gas insulated electrical conductor
Assignee: ABB Inc USA
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Filing: 1973-02-23
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Granted: 1974-06-25
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Expires: 1993-02-23
Abstract
Abstract A high voltage conductor is enclosed in a grounded metal enclosure. The conductor is insulated from the enclosure by a compressed insulating gas. The conductor extends through while its enclosure terminates at a termination apparatus at the wall of the oil filled tank of an electrical component, like a transformer. The termination apparatus comprises a pair of spaced, enclosure sealing, barrier insulators, which are positioned in the enclosure and define a compartment between them. Behind one insulator is the oil of the transformer tank and behind the other insulator is sealed the insulating gas. The intermediate compartment is filled with transformer oil. Leakage of insulating gas past its sealing insulator is trapped in the intermediate compartment and the gas is thereby kept out of the transformer tank.
Inventors
- 👤 V Tahiliani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:38
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
197 words
A termination for a metal enclosed compressed gas insulated electrical conductor assembly, wherein said conductor assembly comprises: an elongated metallic conductor which is adapted to extend into a tank containing an electrical component; an enclosure around and spaced from said conductor; said enclosure having an open end and an opening into said open end with said enclosure open end also being adapted to extend into the tank; support means in said enclosure supporting said conductor therein; a pair of barriers positioned in said enclosure, spaced apart from each other to define a compartment therebetween, each extending between said enclosure and said conductor, and each sealing the space between said enclosure and said conductor; one said barrier being nearer said enclosure opening and being the tank facing barrier and the other said barrIer being further from said enclosure opening and being the conductor facing barrier; whereby any gas in said enclosure on the side of said conductor facing barrier away from said enclosure opening is precluded from moving past said conductor facing barrier, and if it does move past that barrier, said tank facing barrier prevents further bypassage of the gas and traps the gas in said compartment.
Claim 2
Dependent Claim
197 words
A termination for a metal enclosed compressed gas insulated electrical conductor assembly, wherein said conductor assembly comprises: an elongated metallic conductor which is adapted to extend into a tank containing an electrical component; an enclosure around and spaced from said conductor; said enclosure having an open end and an opening into said open end with said enclosure open end also being adapted to extend into the tank; support means in said enclosure supporting said conductor therein; a pair of barriers positioned in said enclosure, spaced apart from each other to define a compartment therebetween, each extending between said enclosure and said conductor, and each sealing the space between said enclosure and said conductor; one said barrier being nearer said enclosure opening and being the tank facing barrier and the other said barrIer being further from said enclosure opening and being the conductor facing barrier; whereby any gas in said enclosure on the side of said conductor facing barrier away from said enclosure opening is precluded from moving past said conductor facing barrier, and if it does move past that barrier, said tank facing barrier prevents further bypassage of the gas and traps the gas in said compartment.
Claim 3
Dependent Claim
64 words
The termination of claim 1, further comprising means for gathering any gas that escapes into said compartment past said conductor facing barrier; said compartment having side ends defined by said barriers and having a top and an opposite bottom joining said barriers; said termination being oriented so that its said top is upward; said gathering means being located at said top of said compartment.
Claim 4
Dependent Claim
26 words
The termination of claim 2, wherein said gathering means comprises a measuring gauge and a valve which permits regulated exit of said gas from said compartment.
Claim 5
Dependent Claim
53 words
The termination of claim 3, wherein said gathering means comprises an expansion chamber communicating with said top of said compartment; said measuring gauge comprising a pressure gauge communicating with said expansion chamber; said expansion chamber having an upper section to which gas would rise; said valve communicating with said expansion chamber upper section.
Claim 6
Dependent Claim
13 words
The termination of claim 1, wherein said barriers are comprised of electric insulators.
Claim 7
Dependent Claim
23 words
The termination of claim 5, wherein said insulators are conically shaped with the narrowed end of each cone facing toward said enclosure opening.
Claim 8
Dependent Claim
34 words
The termination of claim 1, wherein said conductor and said enclosure are wider between said enclosure opening and a location past both said barriers, than the remainder of said conductor assembly beyond said barriers.
Claim 9
Dependent Claim
15 words
The termination of claim 7, wherein near said enclosure opening, said enclosure sharply flares wider.
Claim 10
Dependent Claim
17 words
The termination of claim 8, further comprising a corona ring at the edge of said enclosure opening.
Claim 11
Dependent Claim
80 words
In combination, the termination of claim 1 and a tank having an interior for receiving an electrical component; said tank having a side wall with an opening therethrough through which extend said conductor and said enclosure; means sealing said opening closed around said enclosure; said enclosure opening facing inward to said tank interior, the said space in said enclosure between said conductor and said enclosure and up to said tank facing barrier in said enclosure communicates with said tank interior.
Claim 12
Dependent Claim
42 words
The combination of claim 10, wherein said enclosure sealing means on said tank wall comprises an annular flange protruding a short distance away from said tank wall and an annular sealing plate carried on said flange and sealingly fitted around said enclosure.
Claim 13
Dependent Claim
13 words
The combination of claim 10, wherein said barriers are comprised of electric insulators.
Claim 14
Dependent Claim
23 words
The combination of claim 12, wherein said insulators are conically shaped with the narrowed end of each cone facing toward said enclosure opening.
Claim 15
Dependent Claim
63 words
The combination of claim 10, wherein said tank interior and said enclosure up to said tank facing barrier are filled with oil above the level of said enclosure; said compartment is also filled with oil; said space in said enclosure is filled with a dielectric gas up to said conductor facing barrier and said gas being absent from said compartment and said tank.
Claim 16
Dependent Claim
84 words
The combination of claim 14, wherein said compartment has a top side; gathering means comprising an expansion chamber for gathering any gas that escapes into said compartment past said conductor facing barrier communicates with said top side of said compartment; said gathering means further comprises a pressure gauge communicating with said expansion chamber; said expansion chamber having an upper section to which gas would rise; a valve which permits regulated exit of said gas from said compartment communicates with said expansion chamber upper section.
Claim 17
Dependent Claim
18 words
The combination of claim 14, further coMprising a pressure balancing connection between said tank interior and said compartment.
Claim 18
Dependent Claim
33 words
The combination of claim 16, further comprising means for gathering any gas that escapes into said compartment past said conductor facing barrier; said gathering means being located at the top of said compartment.
Claim 19
Dependent Claim
13 words
The combination of claim 17, wherein said barriers are comprised of electric insulators.
Claim 20
Dependent Claim
35 words
The combination of claim 16, wherein said pressure balancing connection comprises a pipe which is connected with said tank at a location below said enclosure and is connected with the lower side of said compartment.
Claim 21
Dependent Claim
84 words
The combination of claim 10, wherein said compartment has a top side; gathering means comprising an expansion chamber for gathering any gas that escapes into said compartment past said conductor facing barrier communicates with said top side of said compartment; said gathering means further comprises a pressure gauge communicating with said expansion chamber; said expansion chamber having an upper section to which gas would rise; a valve which permits regulated exit of said gas from said compartment communicates with said expansion chamber upper section.
Claim 22
Dependent Claim
18 words
The combination of claim 10, further comprising a pressure balancing connection between said tank interior and said compartment.
Claim 23
Dependent Claim
33 words
The combination of claim 21, further comprising means for gathering any gas that escapes into said compartment past said conductor facing barrier; said gathering means being located at the top of said compartment.
Claim 24
Dependent Claim
26 words
The combination of claim 22, wherein said gathering means comprises a measuring gauge and a valve which permits regulated exit of said gas from said compartment.
Claim 25
Dependent Claim
34 words
The combination of claim 21, wherein said conductor and said enclosure are wider between said enclosure opening and a location past both said barriers, than the remainder of said conductor assembly beyond said barriers.
Claim 26
Dependent Claim
15 words
The combination of claim 24, wherein near said enclosure opening, said enclosure sharply flares wider.
Claim 27
Dependent Claim
19 words
The combination of claim 25, further comprising a corona ring at the edge of said opening into said enclosure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |